@TwoLeftSocksWithHoles In a previous house, the oven came with a strip of metal maybe 30cm wide and as long as the width of the oven, bent into a shallow V shape along its length. It slotted in between the top of the oven and the knobs when grilling to stop the knobs heating up -- then you grilled with the door open.
Since then I've always grilled with the oven door open, I guess it's what I am used to. Perhaps I ought to check the manual for current oven...